Sectionable cassette and embedding frame with connectors, and methods for preparing biopsy tissue samples

A histologic tissue sample support device includes a tissue cassette, a frame, and a lid. The tissue cassette has a recess including a body with at least one side wall and a bottom wall and is formed of material that can be successfully sectioned in a microtome and is resistant to degradation from solvents and chemicals used to fix, process and stain tissue. The tissue cassette is movably coupled to the frame by a frame-cassette connector. The lid is coupled to a peripheral portion of the frame by a lid-frame connector. The lid and the tissue cassette are capable of moving from a first position to a second position with respect to the frame, and in the second position the bottom wall and at least a portion of the side wall extend beyond a bottom edge of the frame for sectioning in a microtome.